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[PULL 16/26] migration: increase max-bandwidth to 128 MiB/s (1 Gib/s)
From: |
Dr. David Alan Gilbert (git) |
Subject: |
[PULL 16/26] migration: increase max-bandwidth to 128 MiB/s (1 Gib/s) |
Date: |
Fri, 25 Sep 2020 13:06:45 +0100 |
From: Laurent Vivier <lvivier@redhat.com>
max-bandwidth is set by default to 32 MiB/s (256 Mib/s)
since 2008 (5bb7910af031c).
Most of the CPUs can dirty memory faster than that now,
and this is clearly a problem with POWER where the page
size is 64 kiB and not 4 KiB.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Message-Id: <20200921144957.979989-1-lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
migration/migration.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/migration/migration.c b/migration/migration.c
index 827f8be07d..de34c995af 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -57,7 +57,7 @@
#include "qemu/queue.h"
#include "multifd.h"
-#define MAX_THROTTLE (32 << 20) /* Migration transfer speed throttling */
+#define MAX_THROTTLE (128 << 20) /* Migration transfer speed throttling
*/
/* Amount of time to allocate to each "chunk" of bandwidth-throttled
* data. */
--
2.26.2
- [PULL 06/26] migration/dirtyrate: Add dirtyrate statistics series functions, (continued)
- [PULL 06/26] migration/dirtyrate: Add dirtyrate statistics series functions, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 07/26] migration/dirtyrate: move RAMBLOCK_FOREACH_MIGRATABLE into ram.h, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 08/26] migration/dirtyrate: Record hash results for each sampled page, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 09/26] migration/dirtyrate: Compare page hash results for recorded sampled page, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 10/26] migration/dirtyrate: skip sampling ramblock with size below MIN_RAMBLOCK_SIZE, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 11/26] migration/dirtyrate: Implement set_sample_page_period() and is_sample_period_valid(), Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 12/26] migration/dirtyrate: Implement calculate_dirtyrate() function, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 13/26] migration/dirtyrate: Implement qmp_cal_dirty_rate()/qmp_get_dirty_rate() function, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 14/26] migration/dirtyrate: Add trace_calls to make it easier to debug, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 15/26] migration: Truncate state file in xen-save-devices-state, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 16/26] migration: increase max-bandwidth to 128 MiB/s (1 Gib/s),
Dr. David Alan Gilbert (git) <=
- [PULL 17/26] migration/tls: save hostname into MigrationState, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 18/26] migration/tls: extract migration_tls_client_create for common-use, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 19/26] migration/tls: add tls_hostname into MultiFDSendParams, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 20/26] migration/tls: extract cleanup function for common-use, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 21/26] migration/tls: add support for multifd tls-handshake, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 22/26] migration/tls: add trace points for multifd-tls, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 24/26] virtiofsd: document cache=auto default, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 25/26] virtiofsd: Used glib "shared" thread pool, Dr. David Alan Gilbert (git), 2020/09/25
- [PULL 26/26] virtiofsd: Add -o allow_direct_io|no_allow_direct_io options, Dr. David Alan Gilbert (git), 2020/09/25